Prediabetes can last for several years, individual differences are large, can not be generalized, timely and effective standardized treatment has the potential to return to normal and not develop into diabetes. Pre-diabetes refers to fasting blood glucose 6.1 to 6.9 mmol/L, or two hours after meal blood glucose 7.8 to 11.0 mmol/L, higher than the normal range but did not reach the diagnostic criteria for diabetes. If at this stage, the patient timely detection, timely intervention, adjustment of dietary habits, low-fat, low-sugar, low-salt diet, appropriate exercise, weight control, blood glucose is likely to return to the normal level, and does not develop into diabetes; however, if the patient’s condition is not effectively controlled, it will ultimately develop into diabetes, and the exact time varies from person to person. Blood sugar abnormalities should be timely medical care, improve glycated hemoglobin, glucose tolerance test and other related tests, follow the doctor’s instructions for standardized treatment.